Question

A stretching force of $100N$ is applied at one end of a spring balance and an equal stretching force is applied at the other end at the same time. The reading on the balance will be

• A. $200N$
• B. $100N$
• C. $400N$
• D. Zero

Answer 1

The correct option is B $100N$

A spring balance actually tells u the force required to lift the body being weighed. The rading is taken when after hanging the load. The speing comes to rest, that is...everything becomes stationary. When a spring is hung on a support and load is attached at its lower end the weight of the load exerts a force on the support and the support, in turn, exerts an equal and opposite force on the load, and the spring remains stretched.

The reading on the balance will be $100N$